NC Grade 8 Science EOG Practice 8th Grade Quiz

NC Grade 8 Science EOG Practice

Assessment

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Joveille Clark

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Science

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8th Grade

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198 plays

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Hard

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110 questions

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Multiple Choice

45 sec

1 pt

The figure below shows a wall of the Grand Canyon.The most recent rocks of the Grand Canyon formed during which geologic period?

Permian

Devonian

Cambrian

Precambrian

Multiple Choice

45 sec

1 pt

To calculate the relative age of rocks, geologists use the rate of radioactive decay of isotopes present in their samples. What is the term used for the original amount of the elemental isotopes being investigated?

rare earth isotopes

son isotopes

daughter isotopes

parent isotopes

Multiple Choice

45 sec

1 pt

If a metamorphic rock contains an intrusion of igneous rock, which rock is the oldest?

The igneous rock is older

The rocks are the same age

The metamorphic rock is older.

Multiple Choice

45 sec

1 pt

Scientists can use relative dating, absolute dating, or a combination of the two techniques to determine the age of a fossil. Which of the following could be determined using both methods?

the difference in age between two fossils

which of two fossils is the older

a narrow age range for a fossil

the exact age of a fossil

Multiple Choice

45 sec

1 pt

Several zircon crystals from Australia have been dated to have an estimated age of 4.2 billion years. Which statement BEST describes the period of formation of these crystals?

They formed relatively recently in the history of Earth.

They formed at a time shortly after the formation of Earth.

They formed at approximately the same time as atmospheric oxygen began increasing.

They formed at approximately the same time as animals first inhabited land environments.